Two former Parramatta Eels players are accused of harbouring semi-automatic weapons and possessing more than half-a-million dollars in cash after dramatic arrests in Sydney's Centennial Park yesterday.

He is the second high profile Nomads member to be charged in two days, after police uncovered a cache of weapons including a loaded sawn-off shotgun, swords and a pen-gun at the Brisbane home of the gang's sergeant-at-arms on Thursday.